高校在职,打算停薪留职去美国做博士后。J1签证,都说要先交签证费,可是我在美国使馆网站上注册后登陆签证类型里没有J类签证,在使馆网页http://www.ustraveldocs.com/cn/cn-niv-paymentinfo.asp上关于签证费有一句If you are applying for a J visa to participate in a U.S. Government-sponsored program, you do not need to pay the MRV fee“美国政府出资赞助的J类签证申请人可以免交签证申请费”,不知道需不需要交签证费啊。